EP0877526A3 - Demodulation von digitalen Videorundfunksignalen - Google Patents

Demodulation von digitalen Videorundfunksignalen Download PDF

Info

Publication number
EP0877526A3
EP0877526A3 EP98303446A EP98303446A EP0877526A3 EP 0877526 A3 EP0877526 A3 EP 0877526A3 EP 98303446 A EP98303446 A EP 98303446A EP 98303446 A EP98303446 A EP 98303446A EP 0877526 A3 EP0877526 A3 EP 0877526A3
Authority
EP
European Patent Office
Prior art keywords
frequency
signal
values
concerned
fourier transform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98303446A
Other languages
English (en)
French (fr)
Other versions
EP0877526A2 (de
EP0877526B1 (de
Inventor
Jean Marc Guyot
Christopher Keith Perry Clarke
Justin David Mitchell
Philippe Sadot
Lauret Regis
Jonathan Highton Stott
Adrian Paul Robinson
Oliver Paul Haffenden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Broadcasting Corp
LSI Corp
Original Assignee
British Broadcasting Corp
LSI Logic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9709063.3A external-priority patent/GB9709063D0/en
Priority claimed from GBGB9727112.6A external-priority patent/GB9727112D0/en
Priority claimed from GBGB9727113.4A external-priority patent/GB9727113D0/en
Priority claimed from GB9808991A external-priority patent/GB2325127B/en
Application filed by British Broadcasting Corp, LSI Logic Corp filed Critical British Broadcasting Corp
Priority to EP08000336A priority Critical patent/EP1933516A3/de
Publication of EP0877526A2 publication Critical patent/EP0877526A2/de
Publication of EP0877526A3 publication Critical patent/EP0877526A3/de
Application granted granted Critical
Publication of EP0877526B1 publication Critical patent/EP0877526B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03025—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception using a two-tap delay line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/2659—Coarse or integer frequency offset determination and synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2663—Coarse synchronisation, e.g. by correlation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0087—Out-of-band signals, (e.g. pilots)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
EP98303446A 1997-05-02 1998-05-01 Demodulation von digitalen Videorundfunksignalen Expired - Lifetime EP0877526B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08000336A EP1933516A3 (de) 1997-05-02 1998-05-01 Demodulierung von Videoausstrahlungssignalen

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
GBGB9709063.3A GB9709063D0 (en) 1997-05-02 1997-05-02 Improvements to OFDM symbol synchronization
GB9709063 1997-05-02
US5419597P 1997-07-30 1997-07-30
US54195P 1997-07-30
GBGB9727112.6A GB9727112D0 (en) 1997-12-22 1997-12-22 Demodulating digital video broadcast signals
GBGB9727113.4A GB9727113D0 (en) 1997-12-22 1997-12-22 Demodulating digital video broadcast signals
GB9727113 1997-12-22
GB9727112 1997-12-22
GB9808990 1998-04-27
GB9808991A GB2325127B (en) 1997-05-02 1998-04-27 Demodulating digital video broadcast signals
GB9808989 1998-04-27
GB9808992 1998-04-27
GB9808991 1998-04-27
GB9808989A GB2325125B (en) 1997-05-02 1998-04-27 Demodulating digital video broadcast signals
GB9808990A GB2325126B (en) 1997-05-02 1998-04-27 Demodulating digital video broadcast signals
GB9808993 1998-04-27
GB9808992A GB2325128B (en) 1997-05-02 1998-04-27 Demodulating digital video broadcast signals
GB9808993A GB2325129B (en) 1997-05-02 1998-04-27 Demodulating digital video broadcast signals

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08000336A Division EP1933516A3 (de) 1997-05-02 1998-05-01 Demodulierung von Videoausstrahlungssignalen

Publications (3)

Publication Number Publication Date
EP0877526A2 EP0877526A2 (de) 1998-11-11
EP0877526A3 true EP0877526A3 (de) 2000-03-29
EP0877526B1 EP0877526B1 (de) 2008-01-16

Family

ID=27576373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98303446A Expired - Lifetime EP0877526B1 (de) 1997-05-02 1998-05-01 Demodulation von digitalen Videorundfunksignalen

Country Status (2)

Country Link
EP (1) EP0877526B1 (de)
AT (1) ATE384401T1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6930995B1 (en) * 1999-06-23 2005-08-16 Cingular Wireless Ii, Llc Apparatus and method for synchronization in a multiple-carrier communication system by observing a plurality of synchronization indicators
GB2352369A (en) * 1999-07-19 2001-01-24 Oak Technology Inc Controlling the sampling rate of a receiver
JP2001308820A (ja) * 2000-04-25 2001-11-02 Mitsubishi Electric Corp 直交周波数分割多重信号受信装置
JP4356203B2 (ja) * 2000-07-11 2009-11-04 ソニー株式会社 復調装置及び復調方法
EP1178640B1 (de) * 2000-08-01 2006-05-24 Sony Deutschland GmbH Vorrichtung und Verfahren zur Kanalschätzung eines OFDM-system
EP1391094A1 (de) 2001-05-31 2004-02-25 Nortel Networks Limited Verfahren und vorrichtung zur messung von unterträger-frequenzen und unterträger-frequenzversätzen
US7362802B2 (en) 2003-09-12 2008-04-22 Zarbana Digital Fund Llc Frequency domain equalizer for wireless commuications system
KR100720546B1 (ko) 2004-12-17 2007-05-22 엘지전자 주식회사 디지털 수신기의 동기 포착 장치 및 방법
US20080107011A1 (en) * 2006-11-02 2008-05-08 Mediatek Inc. System, Apparatus, and Method for Processing a Received Orthogonal Frequency Division Multiplexing Signal
US20090316053A1 (en) * 2008-06-18 2009-12-24 Advanced Micro Devices, Inc. Mobile digital television demodulation circuit and method
JP5348490B2 (ja) * 2009-08-13 2013-11-20 ソニー株式会社 信号処理装置および方法、並びに受信システム
CN110138085A (zh) * 2019-05-28 2019-08-16 珠海博威智能电网有限公司 一种基于非线性补偿算法的高精度配电终端
US20230254792A1 (en) * 2022-02-08 2023-08-10 Charter Communications Operating Drive Phase noise compensation in a wireless system
CN115079771B (zh) * 2022-06-17 2024-04-12 西安芯海微电子科技有限公司 波形生成方法、波形存储方法、装置、设备及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278257A (en) * 1993-05-05 1994-11-23 British Broadcasting Corp Receiving equipment for digital transmissions
WO1995005042A1 (en) * 1993-08-11 1995-02-16 The University Of British Columbia Method and apparatus for frame synchronization in mobile ofdm data communication
EP0683576A1 (de) * 1994-05-20 1995-11-22 Hitachi, Ltd. Digitales OFDM-Rundfunksystem, sowie Übertragungs- und Empfangsvorrichtung für Digitalrundfunk
EP0762703A1 (de) * 1995-08-21 1997-03-12 France Telecom Demodulation eines Mehrträgersignals mit Verringerung von weissen Frequenzstörungen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278257A (en) * 1993-05-05 1994-11-23 British Broadcasting Corp Receiving equipment for digital transmissions
WO1995005042A1 (en) * 1993-08-11 1995-02-16 The University Of British Columbia Method and apparatus for frame synchronization in mobile ofdm data communication
EP0683576A1 (de) * 1994-05-20 1995-11-22 Hitachi, Ltd. Digitales OFDM-Rundfunksystem, sowie Übertragungs- und Empfangsvorrichtung für Digitalrundfunk
EP0762703A1 (de) * 1995-08-21 1997-03-12 France Telecom Demodulation eines Mehrträgersignals mit Verringerung von weissen Frequenzstörungen

Also Published As

Publication number Publication date
EP0877526A2 (de) 1998-11-11
ATE384401T1 (de) 2008-02-15
EP0877526B1 (de) 2008-01-16

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